I met twice a bug by finishing the game: on the beach during the final fight, after exploding the crystal the first time, all the enemies disappeared and when Silas intervenes in the dialogue, he was not there physically, like the enemies. The bug lasts until the end, none of the enemies reappear (which makes the task very easy but also very unusual) and Silas appears at the same time as Gusto, Fatale and Deluinn to say goodbye to Tilo.
I love this game and it's the only bug I have noticed, but I tought that I should report it